Multipath Radio Propagation Reporting for LOS/NLOS Positioning
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Solution Overview
Problem
Existing wireless communication systems, particularly in the context of 5G, face challenges in accurately determining the line-of-sight (LOS) and non-line-of-sight (NLOS) paths for radio propagation, which affects the precision of target object positioning.
Innovation Solution
A sensing node and entity are equipped with processors and transceivers to obtain and report multipath measurements and radio propagation path information, including LOS indicators, to construct a more accurate model of the wireless sensing environment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multipath measurements and radio propagation paths information are obtained and reported, then positioning precision is improved, but device complexity increases
Solution Approach 1:
The system segments the radio propagation path analysis by identifying and separating different path types (LOS and NLOS paths) through multipath measurements. The sensing node measures multiple propagation paths and the sensing entity classifies them into line-of-sight and non-line-of-sight categories, allowing precise positioning while managing complexity through structured analysis.
Solution Approach 2:
The patent introduces a sensing entity as an intermediary component that receives multipath measurements from sensing nodes, processes the radio propagation paths information, and generates positioning data. This intermediary architecture distributes the complexity across multiple specialized components rather than requiring a single complex device.
2Measurement precision
If LOS and NLOS paths are characterized using multipath measurements, then target object location determination accuracy is improved, but measurement and detection difficulty increases
Solution Approach 1:
The system employs feedback mechanisms where sensing nodes continuously measure multipath characteristics and provide this information back to the sensing entity. The sensing entity uses this feedback to characterize LOS and NLOS paths, refine positioning models, and improve location determination accuracy through iterative measurement and analysis.
Solution Approach 2:
The patent performs preliminary characterization of radio propagation paths by measuring multipath properties in advance before final positioning is required. The sensing entity pre-processes the measurements to identify path types and establish propagation models, reducing the complexity of real-time positioning calculations.
Data Source
AI summary
In an aspect, a sensing node may obtain one or more multipath measurements of one or more sensing signals associated with one or more radio propagation paths. The sensing node may obtain radio propagation paths information associated with the one or more radio propagation paths based on the one or more multipath measurements. The sensing node may report, to a sensing entity, the one or more multipath measurements and the radio propagation paths information associated with the one or more radio propagation paths.